Grid for cotton-openers.



PATENTED NOV. 24, 1908,

4 H. s. HOUGHTON.

GRID FOR COTTON OPENERS.

APPLICATION FILED DEC. 1, 1902.

N0 MODEL.

uonms PETERS c0. PNOTCMJT Patented November 24, 1903.

Urns Swans arena @rrrcn.

HENRY S. HOUGHTON, OF WOONSOOKET, RHODE ISLAND.

GRID FOR COTTON-=OPENERS.

SPECIFICATION forming part of Letters Patent No. 744,864, dated November 24, 1903.

Application filed December 1, 1902. Serial No. 133,426- (No model.)

To aZZ whom it may concern:

Be it known that I, HENRY S. HOUGHTON, a citizen of the United States,residiug at Woonsocket, in the county of Providence and State of Rhode Island, have invented new and useful Improvements in Grids for Cotton-Openers, of which the following is a specification.

My invention relates to grids for cottonopeners and like machines; and it has for its object to provide a grid the bars of which are so constructed as to permit the dirt and waste materials separated from cotton by a rapidly rotating beater to freely pass down between them and yet effectually prevent the suction created by the beater from drawing a large percentage of the waste materials back between them. 7

With the foregoing in mind the invention will be fully understood from the following description and claim, when taken in connection with the accompanying drawings, in

which Figure 1 is a vertical longitudinal section of so much of a cotton-opener as is necessary to illustrate my invention, and Fig. 2 a perspective view of one of my improved gridbars removed.

Similar letters of reference designate corresponding parts in both views of the drawings, referring to which A A are the rolls, and B the beater, of a cotton-opener, which may be of the ordinary or any other suitable construction, and O is my improved grid. In the preferred embodiment of my invention the grid 0 comprises curvilinear channel side bars a, only one of which is illustrated, cross-bars b, interposed between the side bars and having end portions 0 adjustable therein, and spacing and adjusting screws cl, bearing in the end portions 0 of each of the cross-bars and engaging the end portions of an adjacent bar. I desire it distinctly understood, however, that the cross-bars b may be formed integral with the side bars or connected to the same in any approved manner without involving a departure from the scope of my invention.

The cross-bars b are peculiar in that they are provided at their lower edges with angular, preferably oblique, toes e, which extend forwardly from the bars with reference to the direction in which the beater B rotates and have rounded rearsides, as shown. Said bars are also peculiar in that the forward sides of the toes e, in conjunction with the forward sides of the upper portions of the bars, de-' scribe obtuse angles.

In the practical operation of my improvementsit will be observed that when the beater strikes the cotton from the feed-rolls the largest amount of dirt and particles of cotton is forced through the space between the lower feed-roll and the bar I) nearest to said roll; also, that dirt and particles of cotton are forced through the spaces between the several bars 1), the obtuse form of the forward sides of the bars afiording large passages for the purpose. While this is so, it will be noticed that the toes e are calculated to offer an obstruction to and deflect the upward currents of airdue to the suction created by the beater, so that while said currents will carry the lighter products of good cotton back to the beater-chamber-z'. a, the space above the grida large percentage of the heavy waste will be thrown into the air-chamber.

It will further be noticed that the waste forced between the bars 1) falls in the apices of the angles formed by the forward sides of the bars and is protected to a great extent from the suction of the beater, with the result that it collects into a body and drops into the air or waste chamber.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

A grid for cotton-openers and the like comprising cross-bars 1), arranged with spaces between them; the said cross-bars being gradually reduced in thickness from their upper edges to a point adjacent their lower edges, and being provided at the latter point with downwardly and forwardly extending toes c, the forward sides of which, in conjunction with the forward sides of the upper portions HENRY S. I-IOUGHTON.

Witnesses:

BELLE SMITH, GEO. W. SPAULDIN e. 

